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DIGITAL MODULATION 1 20 September 2010 Why digital modulation??? 2 20 September 2010 Introduction y The RF spectrum must be shared, yet every day there are more users for…

Engineering Digital transmission new unit 3

1. Digtial TransmissionBy: Srashti Vyas4.1 2. 4.2ANALOG-TO-DIGITAL CONVERSIONAA ddiiggiittaall ssiiggnnaall iiss ssuuppeerriioorr ttoo aann aannaalloogg ssiiggnnaall bbeeccaauussee::11..IItt…

Business Us3997874 time divided switching and concentration apparatus

United States Patent [191 Kelly et al. [54] TIME DIVIDED SWITCHING AND CONCENTRATION APPARATUS [75] Inventors: Michael J. Kelly, Melrose Park; Alex W. Kobylar, Chicago; Satyan…